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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">sergeogr</journal-id><journal-title-group><journal-title xml:lang="ru">Известия Российской академии наук. Серия географическая</journal-title><trans-title-group xml:lang="en"><trans-title>Izvestiya Rossiiskoi Akademii Nauk. Seriya Geograficheskaya</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2587-5566</issn><issn pub-type="epub">2658-6975</issn><publisher><publisher-name></publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.31857/S2587556620040111</article-id><article-id custom-type="elpub" pub-id-type="custom">sergeogr-1136</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>Природные процессы и динамика геосистем</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Natural Processes and Dynamics of Geosystems</subject></subj-group></article-categories><title-group><article-title>Особенности теплового режима и увлажнения постпирогенных степных ландшафтов</article-title><trans-title-group xml:lang="en"><trans-title>Features of the Thermal Regime and Humidification of Post-Pyrogenic Steppe Landscapes</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Павлейчик</surname><given-names>В. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Pavleichik</surname><given-names>V. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Оренбург</p></bio><bio xml:lang="en"><p>Orenburg</p></bio><email xlink:type="simple">pavleychik@rambler.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Калмыкова</surname><given-names>О. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Kalmykova</surname><given-names>O. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Оренбург</p></bio><bio xml:lang="en"><p>Orenburg</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Сорока</surname><given-names>О. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Soroka</surname><given-names>O. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Оренбург</p></bio><bio xml:lang="en"><p>Orenburg</p></bio><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru">Институт степи УрО РАН<country>Россия</country></aff><aff xml:lang="en">Institute of Steppe, Ural Branch, Russian Academy of Sciences<country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru">Объединенная дирекция государственных природных заповедников “Оренбургский” и “Шайтан-Тау”<country>Россия</country></aff><aff xml:lang="en">Joint Directorate State Nature Reserves “Orenburg” and “Shaitan-Tau”<country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2020</year></pub-date><pub-date pub-type="epub"><day>05</day><month>11</month><year>2020</year></pub-date><volume>84</volume><issue>4</issue><elocation-id>541–550</elocation-id><permissions><copyright-statement>Copyright &amp;#x00A9; Павлейчик В.М., Калмыкова О.Г., Сорока О.В., 2020</copyright-statement><copyright-year>2020</copyright-year><copyright-holder xml:lang="ru">Павлейчик В.М., Калмыкова О.Г., Сорока О.В.</copyright-holder><copyright-holder xml:lang="en">Pavleichik V.M., Kalmykova O.G., Soroka O.V.</copyright-holder><license license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://izvestia.igras.ru/jour/article/view/1136">https://izvestia.igras.ru/jour/article/view/1136</self-uri><abstract><p>Уничтожение огнем надземной части растительного покрова приводит к формированию особых микроклиматических условий для последующего восстановления степных экосистем. В связи с этим проведен анализ многолетних (2015–2018 гг.) данных автономных регистраторов температуры и влажности поверхности гари, верхних слоев грунта и воздуха на участке “Буртинская степь” заповедника “Оренбургский” (Оренбургская область) с учетом сведений об особенностях залегания снежного покрова, полученных в результате снегомерной съемки, и анализа материалов дистанционного зондирования (снимки MODIS и Landsat). Выявлено, что отсутствие в результате пожара сформированного растительного покрова в зимние периоды приводит к сокращению мощности и продолжительности залегания снежного покрова, что является причиной более значительного промерзания грунта на гарях и ухудшения условий весеннего увлажнения почвы. Теплый бесснежный период года характеризуется отчетливо выраженными суточными амплитудами хода температур. При этом как на поверхности, так и в приповерхностном слое почвы гарей отмечается повышенный тепловой фон в условиях повышенной инсоляции. Полученные результаты свидетельствуют, что микроклиматический режим гарей в первые годы после пожара значительно отличается от фоновых территорий. По многолетней динамике рассматриваемых показателей можно считать восстановительные процессы в целом законченными спустя четыре полных вегетационных периода после пожара.</p></abstract><trans-abstract xml:lang="en"><p>The destruction by fire of the above-ground part of the vegetation cover leads to the formation of special microclimatic conditions for the subsequent restoration of the steppe ecosystems’ components. In this regard, the analysis of long-term data (2015–2018) of autonomous recorders of temperature and humidity of the surface of the burned areas, near-surface layers of soil and air in the Burtinskaya Steppe area of the Orenburg Nature Reserve (Orenburg oblast) was conducted. Information on the snow cover occurrence taken as a result of snow surveying and analysis of remote sensing data (images from MODIS and Landsat) was taken into account. It has been revealed that the absence of formed vegetation cover in winter periods leads to a reduction in the snow cover’s thickness and duration of its presence. It is the cause of a more significant freezing of the soil at the bur burned areas and the deterioration of spring wetting conditions. The warm snowless period of the year is characterized by clearly pronounced daily amplitudes of the temperatures course, with an increased thermal background under conditions of increased insolation, both on the surface of the burned areas and in the near-surface layer of the soil. The results indicate that the microclimatic regime of burned areas in the first years after the fire is significantly different from the background areas. According to the considered indicators’ long-term dynamics, the recovery processes can be considered completed after four complete vegetation periods after the fire.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>природные пожары</kwd><kwd>гарь</kwd><kwd>тепловой режим</kwd><kwd>условия увлажнения</kwd><kwd>растительный покров</kwd><kwd>постпирогенные сукцессии</kwd><kwd>мониторинг</kwd></kwd-group><kwd-group xml:lang="en"><kwd>wildfires</kwd><kwd>steppe</kwd><kwd>burned areas</kwd><kwd>thermal regime</kwd><kwd>moisture conditions</kwd><kwd>vegetation cover</kwd><kwd>post-pyrogenic successions</kwd><kwd>monitoring</kwd></kwd-group><funding-group xml:lang="ru"><funding-statement>Статья подготовлена в рамках темы государственного задания № ГР АААА-А17-117012610022-5 и гранта РФФИ №18-05-00088.</funding-statement></funding-group><funding-group xml:lang="en"><funding-statement>The study was financially supported within the framework of the state-ordered research theme of the Institute of Steppe UB RAS (no. АААА-А17-117012610022-5) and by the Russian Foundation for Basic Research (grant no. 1805-00088).</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Дусаева Г.Х. Динамика степных фитоценозов в первые годы после пожара (на примере мониторингового участка № 1 в “Буртинской степи” ГПЗ “Оренбургский”) // Изв. Самарского науч. центра РАН. 2017. Т. 19. № 5. С. 8–13.</mixed-citation><mixed-citation xml:lang="en">Dusaeva G.Kh. Dynamics of steppe phytocenoses in the first years after the fire (on the example of the monitoring site no. 1 in the “Burtinskaya steppe” of the state nature reserve “Orenburg”). Izv. Samar. Nauchn. Tsentra Ross. Akad. Nauk, 2017, vol. 19, no. 5, pp. 8–13. (In Russ.).</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Иванов В.В. 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